Blood Pressure Measuring Device and Method for Measuring the Blood Pressure of a Living Being

Abstract

A blood pressure measuring device includes a flexible element configured to at least partially surround a body part and having a stiffening element configured to stiffen the flexible element; and at least one pressure sensor element attached to the flexible element.

Description

FIELDThe invention relates to a device and to a method for measuring the blood pressure of a living being. In particular, the invention relates to a device and to a method for determining parameters involving the heart-lung interaction in a living being.BACKGROUNDIn medical practice, there are many situations in which it is necessary to obtain information about the condition of the circulatory system. In particular, clinical medicine often requires certain parameters so that decisions can be made about specifically influencing the cardiovascular system, for instance, to decide whether it would be advisable to replenish the circulatory system with an infusion solution, or whether—as an alternative or to what extent—the circulatory system should be assisted by means of circulation-active drugs. The parameters of the heart-lung interaction (HLI) have proven to be especially useful in this context. These parameters, however, are usually based on an invasive measurement of the arterial b...

AI Technical Summary

Benefits of technology

An aspect of the present invention is to put forward a device and a method for measuring blood pressure which, in comparison to the prior art, improve the signal quality during a non-invasive measurement of pulsatile signals.

Preferably, the degree of the fixation of the external fixation means can be kept constant, preferably through regulation by the control unit. The degree of the fixation is a function of the pressure that the external fixation means exerts onto the body part via the flexible element. Consequently, the degree of the fixation is preferably derived from this pressure, which is preferably measured by a pressure sensor element. Especially preferably, this pressure sensor element is a pressure sensor element that has already been attached to the flexible element. Therefore, the degree of the fixation is preferably regulated in terms of the pressure exerted onto the body part. Especially preferably, the degree of the fixation can be systematically varied. This preferably makes it possible to perform measurement procedures. The degree of the fixation is preferably controlled by the control unit. Preferably, the degree of the fixation can also be regulated in terms of certain measured values, for instance, the pressure exerted onto the body part.

Problems solved by technology

These parameters, however, are usually based on an invasive measurement of the arterial blood pressure and require laborious cannulization of an arterial vessel.

Non-invasive methods for measuring HLI parameters have not been very satisfactory so far because of their poorer signal quality.

In this process, damping effects, caused by damping in the tissue and in the measuring device, have a considerable negative impact on the signal-to-noise ratio.

This is why non-invasive methods fail in actual practice,

However, it is not disclosed how a suitable signal quality can be achieved with these measuring instruments.

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